To give an example of what Jim is talking about, take the High School football team example, which is about "following in the father's footsteps" as you said. Let's start with only considering the two individuals. You might think about how the father wants the son to make the team more than anything, and how the son wants to make the team because he wants to impress his father.
Then say you're encoding the Relationship Story Issue of Experience: "This works great!" you say. "The father really wants his son to have the same experiences he had in high school. Those years playing football were the best of his life." Or maybe even: "The father missed out on playing high school football because of a knee injury early in his freshman year, so now he wants his son to have all the great experiences that he missed."
So then you write your scene where the kid gets kicked off the team due to bad grades, and this helps you figure out the conflict. And there's some heart there maybe, but it's not to the level of what Jim's talking about...
...Because what you missed was that the RELATIONSHIP, the space between the father and son, is desperately craving the shared experience of them bonding and connecting over football, practicing in the backyard together like when the boy was 10, badmouthing the high school coach together, whatever. So now when the boy gets kicked off the team, it really hurts, there is a sense of loss. There was a real chance here for them to grow closer together, but now that's been taken away. Maybe the dialogue in your scene is almost the same, but the subtext is way different, and that matters. (and probably also feeds your ideas of what will happen in future scenes, backstory, etc. as the relationship continues to develop)
Anyway, just one possible encoding and kind of a cheesy example, but you can see how it helps you reach that "emotional heart".